DP Review compares Lightroom 4, Capture One Pro 7, and DxO Optics Pro 8. I'm surprised by inclusion of DxO Optics Pro and saddened at the exclusion of Apple's Aperture. The article compares many aspects of the raw converters but ultimately concludes it's up to the user to decide what is most important. I've never used DxO Optics Pro and don't know anyone who does. Capture One Pro I've always found difficult to use, although it's speed is impressive. For now, I'm sticking with Adobe Lightroom because of it's cataloguing, key wording, workflow, retouching, and plug-in architecture.